EP 0059326 B1 19860903 - A STEPPER MOTOR DRIVE CIRCUIT FOR SYNCHRONOUS SWITCHING OF CORE WINDING
Title (en)
A STEPPER MOTOR DRIVE CIRCUIT FOR SYNCHRONOUS SWITCHING OF CORE WINDING
Publication
Application
Priority
US 23839981 A 19810226
Abstract (en)
[origin: US4412166A] A stepper motor drive circuit is provided for preventing undesirable cross conduction on complementary winding drivers during switching. The circuit provides a current path from a source through at least one winding about a core in the motor; the path has two branches. There is a first switching device in the first of said branches switchable to conduction or non-conduction through the branch and a second switching device in the second of said branches switchable to conduction or non-conduction through the second branch. Sensing means, operative during the switching of said switching devices, sense the non-conductive state through the branch being turned off. Means responsive to the sensing by said sensing means of the non-conductive state, then switch the switching device in the branch being turned on to conduct current through said branch.
IPC 1-7
IPC 8 full level
H02P 8/14 (2006.01); H02M 1/38 (2007.01); H02P 8/12 (2006.01)
CPC (source: EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0059326 A1 19820908; EP 0059326 B1 19860903; DE 3272958 D1 19861009; JP H0258876 B2 19901210; JP S57148591 A 19820913; US 4412166 A 19831025
DOCDB simple family (application)
EP 82100718 A 19820202; DE 3272958 T 19820202; JP 20378081 A 19811218; US 23839981 A 19810226